but at least these numbers show that with the right mentality and the right managemt it is doable

From what I see, from this side of the pond, not having visited for a few years, is that if people would buy newer vehicles there would be quite a saving. Wiki -Age of vehicles in operation says

"The study found that of vehicles in operation in the US, 38.3% were older than ten years, 22.3% were between seven and ten years old, 25.8% were between three and six years old and 13.5% were less than two years old."

Also nearly everywhere people are running around in trucks and SUV's and the like without needing them. Some of those, even the new ones, struggle to do 20mpg, so swapping to a more suitable vehicle that would probably do 35mpg or greater would cover the shortfall.

P.S. I've URL'd the links for you. Please next time just highlight the links and hit the URL button above, it makes it easier than cutting and pasting.

Two out of three.
Cetane is the measure used for diesel fuels -hence the comment about "OK for some of us".
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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?